Lectrosonics UT Manuel utilisateur

Fill in for your records:

Serial Number:

Purchase Date:

This guide is intended to assist with

initial setup and operation of your

Lectrosonics product.

For a detailed user manual, down-

load the most current

version at:

www.lectrosonics.com/manuals

Quick Start Guide

UT Handheld Transmitter

17jul07

U.S. Patent 7,225,135

LECTROSONICS, INC.

Power LED

On/Off and

Mute Switch

Frequency

Switches

Audio Level Control

Modulation

Level LEDs

Battery

Compartment

Locking ring

Battery

Compartment

Cover

Windscreen

Controls and Functions

Power ON/OFF and Mute Switch

Turns the transmitter on and off, or can be set as an audio mute.

Power LED

Indicates power status and battery strength.

Audio Level Control

The front panel AUDIO LEVEL Control is used to adjust the incoming audio

input level for proper modulation.

Modulation LEDs

The two bicolor Modulation LEDs provide a visual indication of the input audio

signal level from the microphone.

Frequency Select Switches

Two 16-position rotary switches adjust the center frequency of the carrier. The

1.6M is a coarse adjustment and the 100K is the ﬁne adjustment.

Important: Due to the high RF levels surrounding the

transmitter, the sound of the VariMic capsule may be

temporarily affected if the metal windscreen is not in place.

Always make the ﬁnal decision about sound balance and

quality with the windscreen in place. See the user’s manual

for further information

www.lectrosonics.com 3

The transmitter is powered by a standard alkaline or LiPolymer rechargeable

9 Volt battery. Alkaline batteries will provide about 3.5 hours of operation

while the LiPolymer batteries will operate the transmitter for about 4 hours.

Note: The battery status lamp will function normally only with

alkaline or lithium batteries. Standard zinc-carbon batteries

marked “heavy duty” or “long-lasting” are not adequate. They will

provide only about 30 minutes of operation.

LiPolymer rechargeable batteries will work, but they run down quite abruptly.

Because of this, using the Power LED to verify battery status not reliable with

NiMH batteries. However, a number of Lectrosonics receivers incorporate a

Battery Timer function which tracks the amount of time the transmitter signal

is detected (See your receiver manual to determine if this function is avail-

able.) By using the receiver’s battery timer and replacing the transmitter

battery before the premeasured time is up, you can minimize potential loss of

audio when the batteries are drained.

The battery compartment is located in the lower section of the transmitter,

between the two printed circuit boards. Follow the steps illustrated below to

install a fresh battery.

Note the two differently sized holes in the battery contact pad inside the

Battery Compartment. Insert the battery so that the large hole in the battery

contact pad will line up with the large contact on the battery. A spring-loaded

plunger in the bottom of the compartment (opposite the contact pad) secures

the battery in place.

The battery status is indicated by the Power LED on the bottom panel. The

Power LED glows green when a new battery is installed, then changes to red

as battery condition deteriorates. It begins blinking red as the battery nears

depletion. Battery status is also displayed on the front panel LCD of some

Lectrosonics receivers. See the associated receiver manual for further details.

Note: It is possible to insert the battery backwards and still be able

to close the battery door. No damage will occur but the transmitter

will not operate in this condition.

Battery Installation

LECTROSONICS, INC.

Operating Instructions

Selecting the Compatibility Mode

The UT Handheld Transmitter can be used with Lectrosonics 400 Series Digi-

tal Hybrid, 200 Series analog, 100 Series analog and some non-Lectrosonics

analog wireless receivers. Contact the factory for details on the non-Lectro-

sonics models that can be used. The transmitter must be set to the operating

mode of the matching receiver, which is done using the supplied screwdriver

and a battery.

NOTE: The unit is supplied from the factory in Hybrid mode.

1) Ensure the battery is good.

2) Turn off the transmitter.

3) With a small screwdriver (included), set the Frequency Select Switches to

CC. (for Change, Change).

4) Power up the unit brieﬂy – just long enough for the LED’s to light up and

then turn it off - about one second.

5) Change the Frequency Select Switches to one of the following settings:

• To set Lectrosonics 100 Series mode: 1,1

• To set Lectrosonics 200 Series mode: 2,2

• To set Mode 3*: 3,3

• To set Lectrosonics Hybrid mode: 4,4

• To set IFB mode: 5,5

* contact the factory for details

6) Turn the unit on, wait about one second and turn it off again.

7) Change the Frequency Select Switches to 0,0.

8) Turn on the transmitter to complete the operation.

The LEDS will blink to indicate the selected compatibility mode. Immedi-

ately after powerup, all LEDS will blink together red, then green, followed

by the audio level LEDs (-20 and -10) blinking to indicate the mode.

The -20 and -10 LEDs will blink:

• Once for 100 Series mode

• Two times for 200 Series mode

• Three times for Mode 3

• Four times for 400 mode

• Five times for IFB mode

At powerup the transmitter will conﬁrm the current compatibility mode

with the number of blinks listed here. This setting will remain the same

until you reset it with the procedure listed above.

www.lectrosonics.com 5

Adjusting Gain

1) Ensure the battery is in good condition.

2) Mute the associated receiver’s audio output.

3) Turn on the transmitter.

4) Position the transmitter in the location you will use in actual operation.

While speaking or singing at the same voice level that will actually be

used, observe the Modulation LEDs. Adjust the AUDIO LEVEL control

until the –20 dB LED

glows green with oc-

casional red ﬂickers and

-10 dB glows green. This

will set the gain of your

transmitter to between

+0 dB and +10 dB modu-

lation. (See chart at left.)

5) Once the gain has been adjusted, the audio system audio can be turned

on to make level adjustments in the main audio system.

NOTE: The transmitter Audio Level Control should not be used to

control the volume of your sound system or recorder levels. This

gain adjustment matches the transmitter gain with the user’s voice

level and microphone positioning.

Operating Notes

If the audio level is too high — both LEDs will blink red frequently or glow a

steady red. This condition may reduce the dynamic range of the audio signal.

If the audio level is too low — neither LED will glow, or only the -20 LED will

glow green. This condition may cause hiss and noise in the audio.

Different voices will usually require different settings of the AUDIO LEVEL

control, so check this adjustment as each new person uses the system. If

several different people will be using the transmitter and there is not time to

make the adjustment for each individual, adjust it for the loudest voice.

Signal Level -20 LED -10 LED

Less than -20 dB Off Off

-20 dB to -10 dB Green Off

-10 dB to +0 dB Green Green

+0 dB to +10 dB Red Green

Greater than +10 dB Red Red

LECTROSONICS, INC.

Frequency Select Switches

Two 16-position rotary switches adjust the

center frequency of the carrier. The 1.6M

is a coarse adjustment and the 100K is the

ﬁne adjustment.

Changing the Frequency

The Frequency Switches are located under the Battery Compartment Cover.

The left switch is for coarse frequency adjustment, and it increments the

operating frequency in 1.6 MHz steps. The right switch is for ﬁne frequency

adjustment and it increments the operating frequency in 100 kHz steps With

the small screwdriver supplied with the kit, turn the left switch to the ﬁrst char-

acter in the two-digit Transmitter Frequency Switch Setting code, then turn

the right switch to the second character of the two-digit code. For example:

the frequency is 623.000, and two-digit Transmitter Frequency Switch Setting

code is 56, thus lefthand switch on your transmitter should be set to “5” and

the righthand switch to “6”.

Note: If you are using a receiver with a frequency scan function,

ﬁnd a clear frequency with the receiver, then set the transmitter

to the frequency selected with the receiver. With Lectrosonics

400 Series receivers, a front panel LCD character display will

indicate the correct transmitter switch settings as a two-character

alphanumeric hex code once a clear frequency has been located

with the scan function.

012

EF012

1.6M 100K

Coarse Fine

Frequency Switches

(set to D8 in this example)

www.lectrosonics.com 7

Power LED

Power On/Off

Switch

Locked Mode

The UT can be placed in a locked mode where the Power switch and the Fre-

quency Switches are disabled. This protects the unit from accidental power-off

or misadjustment after it has been prepared for use.

To enter locked mode, toggle the Power switch off then on again rapidly three

times. The sequence must start with the Power Switch in the On position. Set

the Power Switch to On, then initiate the Locked Mode sequence, i.e., Off-On,

Off-On, Off-On). Each toggle must take no longer than two seconds and

there cannot be more than ten seconds between toggles.

During the ﬁrst two toggles, the Power

LED will behave normally, blinking slowly

red while the switch is in the off position

to warn that the power will go off, then

returning to normal battery status indication

when the switch is set to On again. After

the third toggle, the Power LED will go out

brieﬂy, then blink the code that indicates

the current Compatibility Mode, just as it

does when the unit is ﬁrst powered on. The

Power LED going out brieﬂy followed by this

blinking code serves as a conﬁrmation that

the switches are now locked.

Note: Locked Mode can only be

cleared by removing the battery.

Note that since removing the battery

bypasses the normal delayed power-

off circuit, it may cause noise at the

receiver.

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